There was a link to an article about growing orchids in peat moss on here some time ago. If you are interested, I will see if I can find it. I was interested but nervous to try. It's hard keeping some of my Milts moist and I thought mixing it in with my fine bark would be better than sphagnum. Or maybe coco fibre. For my Phals I figure their big roots need more air pockets to breathe so peat moss might be too fine. But when you consider epyphitic orchids growing in water (SH), anything is possible